/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/ToolSceneQueriesUtil.h
(approximate) 3D dimension that corresponds to a radius of target visual angle around Point
namespace ToolSceneQueriesUtil { double ToolSceneQueriesUtil::CalculateDimensionFromVisualAngleD ( const [FViewCameraState](API\Runtime\InteractiveToolsFramework\FViewCameraState) & CameraState, const FVector3d & Point, double TargetVisualAngleDeg ) }